JP2006081162A5 - - Google Patents
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- JP2006081162A5 JP2006081162A5 JP2005223345A JP2005223345A JP2006081162A5 JP 2006081162 A5 JP2006081162 A5 JP 2006081162A5 JP 2005223345 A JP2005223345 A JP 2005223345A JP 2005223345 A JP2005223345 A JP 2005223345A JP 2006081162 A5 JP2006081162 A5 JP 2006081162A5
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Claims (16)
前記N×M個の要素を含む前記チャネル特性データを前記基地局へ返送するステップと、
前記N×M個の要素を含む前記チャネル特性データをアンテナ及びクライアント装置の組のそれぞれに関連づけて記憶するステップと、
前記クライアント装置のそれぞれへ送信されるべきデータを受信するステップと、
前記基地局の各アンテナに対するプリコーディングされたデータ信号を生成するため、各個のアンテナ及びクライアント装置の組に関連した前記N×M個の要素を含む前記チャネル特性データを使用して前記データをプリコーディングするステップと、
前記基地局の各アンテナを介して各個のクライアント装置へ前記プリコーディングされたデータ信号を送信するステップと、
を含む方法。 A step of transmitting a training signal from each antenna of a base station to each of a plurality of client devices that independently analyze each training signal in order to generate channel characteristic data , wherein a base station having N antennas When transmitting to M client devices, the channel characteristic data includes at least N × M elements, each element defining a channel; and
Returning the channel characteristic data including the N × M elements to the base station;
Storing the channel characteristic data including the N × M elements in association with each antenna and client device pair ;
Receiving data to be transmitted to each of the client devices;
To generate the data signals which have been pre-encoded for each antenna of the base station, the pre said data using said channel characteristic data including the N × M pieces of elements associated to the set of each individual antenna and the client device Coding steps;
Transmitting the precoded data signal to each client device via each antenna of the base station;
Including methods.
各クライアント装置に対する新たなチャネル特性データを受信するステップであって、該各クライアント装置に対する新たなチャネル特性データは、前記基地局の各アンテナからの前記新たなトレーニング信号を独立に処理し特性化する各クライアント装置によって生成されている、該ステップと、
各クライアント装置に対する、前記N×M個の要素を含む前記新たなチャネル特性データを記憶するステップと、
をさらに含む、請求項2記載の方法。 Periodically transmitting a new training signal to each client device via each antenna of the base station;
And receiving a new channel characterization data for each client device, the new channel characterization data for each of said client device, said processing and characterized independently a new training signal from each antenna of the base station The steps being generated by each client device ; and
Storing the new channel characteristic data including the N × M elements for each client device;
The method of claim 2 further comprising:
前記複数台のクライアント装置のうちの第1の選択されたグループへの1回目の送信工程と、
前記複数台のクライアント装置のうちの第2の選択されたグループへの2回目の送信工程と、
を含み、
前記第1の選択されたグループ及び前記第2の選択されたグループが所望の方式で帯域幅を割り付けるように定められる、請求項1記載の方法。 Transmitting each of the precoded data signals;
A first transmission step to a first selected group of the plurality of client devices;
A second transmission step to a second selected group of the plurality of client devices;
Including
The method of claim 1, wherein the first selected group and the second selected group are defined to allocate bandwidth in a desired manner.
前記チャネル特性データをチャネル特性行列として記憶するステップと、
前記プリコーディングされたデータ信号を生成するため、別個のビットストリームのそれぞれに前記チャネル特性行列の逆を乗算するステップと、
をさらに含む、請求項1記載の方法。 Routing input data to separate bitstreams destined for each client device to respective antennas of the base station;
Storing the channel characteristic data as a channel characteristic matrix;
Multiplying each of the separate bitstreams by the inverse of the channel characteristic matrix to generate the precoded data signal;
The method of claim 1, further comprising:
基地局と、
前記基地局の複数台のアンテナと、
を備え、
各アンテナが複数台のクライアント装置のそれぞれにトレーニング信号を送信し、
各クライアント装置が、対応のトレーニング信号を独立に分析してチャンネル特性データを生成し、
N個のアンテナを有する基地局がM台のクライアント装置に送信する場合に、チャンネル特性データが少なくともN×M個の要素を含み、各要素が前記N個のアンテナのうち一つと前記M台のクライアント装置のうち一つとの間のチャンネル特性を規定し、
各クライアント装置が前記N×M個の要素を含む前記チャンネル特性データを前記基地局へ返送し、
前記基地局が、前記N×M個の要素を含む前記チャンネル特性データを、アンテナ及びクライアント装置の組のそれぞれに関連づけて記憶し、
前記基地局が、対応のアンテナ及びクライアント装置の組に関連づけられた前記N×M個の要素を含む前記チャンネル特性データを使用して、データをプリコーディングして、各アンテナ及びクライアント装置の組用のプリコーディングされたデータ信号を生成し、
前記基地局の各アンテナが、各アンテナを介して対応のクライアント装置へ対応のプリコーディングされたデータ信号を送信する、
システム。 Multiple client devices;
A base station,
A plurality of antennas of the base station;
With
Each antenna sends a training signal to each of multiple client devices,
Each client device independently analyzes the corresponding training signal to generate channel characteristic data,
When a base station having N antennas transmits to M client devices, the channel characteristic data includes at least N × M elements, and each element includes one of the N antennas and the M antennas. Define the channel characteristics with one of the client devices,
Each client device returns the channel characteristic data including the N × M elements to the base station,
The base station stores the channel characteristic data including the N × M elements in association with each antenna and client device pair;
The base station uses the channel characteristic data including the N × M elements associated with a corresponding antenna and client device pair to precode data for each antenna and client device pair. Generates a precoded data signal of
Each antenna of the base station transmits a corresponding precoded data signal to a corresponding client device via each antenna.
system.
Applications Claiming Priority (1)
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US10/902,978 US7418053B2 (en) | 2004-07-30 | 2004-07-30 | System and method for distributed input-distributed output wireless communications |
Publications (2)
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JP2006081162A JP2006081162A (en) | 2006-03-23 |
JP2006081162A5 true JP2006081162A5 (en) | 2008-08-21 |
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JP2005223345A Pending JP2006081162A (en) | 2004-07-30 | 2005-08-01 | System and method for input-distributed, output-distributed type wireless communications |
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US (1) | US7418053B2 (en) |
EP (2) | EP2278764B1 (en) |
JP (1) | JP2006081162A (en) |
KR (1) | KR101170336B1 (en) |
CN (1) | CN1734972B (en) |
AU (1) | AU2005203336B2 (en) |
CA (2) | CA2856772C (en) |
FI (2) | FI2278764T3 (en) |
HK (1) | HK1087850A1 (en) |
TW (1) | TWI372541B (en) |
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